Atmosphere and Hydrosphere are the answer. The atmosphere is a layer of gases that surrounds in the planet or other material inside the body that is held in place by the gravity of that body. There is also Atmosphere in earth or what we called Air, it is also a layer of gases. It is the whole mass of air that surrounds the earth so that we can breathe freely. Earth atmosphere contains 78% nitrogen, 0.9% argon, 21% oxygen and 0.03% carbon dioxide. Hydrosphere in the other side is all the water on the earth’s surface example are lakes, seas and sometimes including water over the Earth’s surface like clouds.
Answer: This is life science right? If it is the answer is the microscope
Explanation:
The outer coverings that are tough but, flexible provided protection to the land plants.
protecting the burned skin so healing can occur is the answer .
The difficulty with this answer, lies in the fact that not all of land and ocean biomes have been completely explored. The ocean is vast, covering approximately 70% of the Earth's surface, with literally vertical miles or kilometers of depth, and with some areas with sparse to no biodiversity. The same can be said about certain areas of large deserts with very low levels of biodversity, void of life, like vast deserts of the Sahara or Gobi. But, the Amazon rain forest contains still unknown species of plant and animal life, just like the ocean. Because of its vastness, intellectually, I would say the ocean contains more biodiversity, but the answer is scientifically, as of now, yet to be proven one way or the other.